Lighttpd or litespeed for FCGI

has anyone compared lighttpd vs litespeed ? i was looking at the
benchmarks here (Bot Verification) and it seems
litespeed performs better than lighttpd , especially in fcgi. Both
trump apache so it was just a matter of considering lighttpd vs
litespeed for rails. just wondering if anyone has any experience
using both and any comments on such.

thanks
adam